This is old, but Shadowboy recently discovered it and has been playing incessantly at me, so I’m going to share it with you. It’s somewhat more geeky than gothy, but it does have Neil Gaiman.

Olga Nunes and Elaine Doyle were so inspired by this xkcd comic that they set it to music, and they managed to talk a bunch of famous geeks into singing along. Neil Gaiman, Wil Wheaton, Cory Doctorow (in cape and goggles), Patrick & Teresa Nielsen Hayden, and loads of others are featured.

(And to get even more meta, the reason Cory Doctorow is wearing a cape and goggles is because of this cartoon. It is an immutable law of the universe that whatever the subject, there is an xkcd cartoon that’s relevant.)